Means for driving spindles in textile-spinning machines



Dec. 9, 1930. J. BERLINERBLAU 1,784,719

MEANS FOR DRIVING SPINDLES IN TEX TILE SPINNING MACHINES Filed Dec. 14, 1 927 INVENTOR. fier/mer/cz a A TTORN E YS.

Patented Dec. 9, 1930 PATENT; OFFICE :rosn'rn BEBLINERBLAU, or WARSAW, POLAND MEANS non DRIViNG SPINDLES IN TEXTILE-SPINNING'MAonINns Application filed December 14, 192?,Seria1 No. 240,049, and in Great Britain December 15, 1926.

and particularly where existing machines have been converted to electric spindle drive the alteratlons necessary to provide this support have had to be made with precision in order to preserve the correct alignment of the spindles or the alignment of the motor casings with the existing spindle bearings.

Furthermore in applying the motor casings to the spindles in such arrangements these casings have covered a considerable part of the length of the spindles, leaving insufficient clearance for the braking of the spindles manually as is still the practice in some places.

The object of this invention is to provide an electric drive for each individual'spindle in such manner that it can be applied without in any way departing from the prevailing methods of mounting the spindles on so the machine, or in cases of conversion, with out interfering with the mounting of the spindles in the machine to provide the requisite support for the motor casings.

To attain this object, according to the invention the motor casings are supported by the spindles themselves, which latter form continuations of or are coupled to the motor shafts, in alignment therewith, means being provided to check the tendency of the casings to rotate with the spindles under the influence of the magnetic flux and the friction in the bearings.

The invention and the advantages thereof will be more readily understood by reference to the accompanying drawing in which an example of the'improved drive is illustrated, one spindle only with its motor beingshown for the sake of simplicity.

The figure is a vertical elevation partly in section.

I The spinning machine frame indicated generally at A includes atop rail a and a bottom rail 6 carried by: stretchers c.- The spindle d with its flyer e is supported in the top rail by means vof a bush or sleeve f and in g has-to support it preferably provided with a steel ball 2' against which the lower end of the spindle bears to reduce friction and consequent excessive wear. p

'To compensate for. wear in the bearing in the top rail a, thespindle where it passesjio through the bush fis preferably tapered as shown at 7' and the bush is likewise tapered so that when occasion arises the bush may be lowered to take up the slack and prevent the spindle wobbling, this bush being locked in its 7 5 adpisted position bymeans of the set screw is.

The motor for driving the spindle is indicated generally at B being preferably a three phaseor other polyphase motor with a short circuited winding and working with any desired lo'w tension of, variable frequency. As illustrated the motor is situated intermediately of the ends of the spindle which is preferably formed as a continuation of the motor shaft 2? although it may be joined to the latt er. The rotor t which in the construction illustrated is composed of iron laminations is secured to the spindle in such manner as to rotate with it and is surrounded as usual by the winding arranged in the casing. The cas- 9c ing instead of being supported by the spinning frame directly as hitherto is supported by the spindle itself, and for this purposeit comprises a body portion a and upper and lower end-plates 0 and p secured to the said body portion by screws or other suitable means. 'The upper end-plate 0 isprovided with a recess 9 forming a housing for an axial thrust ball or roller bearing 1'. The lower race of this hearing rests on a shoulder on the lee signature.

spindle said shoulder being for example formed by enlarging the diameter of the spindle, and the bearing is held in place in the recess by means of a cap a screwed into the said recess g.

The lower end-plate p is similarly provided with a ball or roller bearing '0 accommodated in a recess to in theend plate but i-n this case the bearing need only be lateral thrust hearing as it does not have to sustain any Weight but has merely to take up the radial pressure of the spindle. For convenience it is preferable to continue theincreased diameter of the spindle so as to form a shoulder against which the lower bearing is positioned. c

As the casing and winding have a tendency to rotate under the influence of the magnetic flux and the friction in the bearings when the spindle is rapidly revolving, means must be provided to prevent such rotation occurring. The means illustrated by way of example consists of a tension spring a: suitably secured at one end to the top cover or end plate 0 as forinstance with the aid of one of the holding down screws w and anchored at the other end to the spinning frame, as for instance to'the stretcher 0. The spring'in no sense aids in supporting the casing and asithe tendency of the casing to rotate is not great the spring need be only strong enough for this purpose.

The invention is applicable to all kinds of spinning machines, whether the spindles thereof operate fiyers or rings, and in fact to any spinning motion wherein the motors and spindles can be arranged as independent units,

the invention being especially applicable to heavy duty machines for spinning hemp, flax and other fibres of a hard or coarse nature. Havingnow particularly described and ascertained the nature of my said invention and in what manner the same is to be performed,

I claim: g V

1. In a spinning machine, a frame, a spindle in the frame, an electric" motor including a rotor and a casing, the rotor being mounted on the spindle, a shoulder on the spindle supporting the casing, and a resilient connection between the frame and the casing preventing turning of the latter.

2. An arrangement as claimed in claim 1' characterized by the provision of athrust bearing interposed betweenthe-shoulder and the casing. w i

3. An arrangement as claimed in claim 1 characterized by the provision of an axial bearing interposed between the spindle and casing at the end' ofthelatter opposite that mounted on the shoulder.

4 Anarrangement as claimedin claim characteriz d by the provision of a bear-- ing'nit'er qsfedbet een the lower end of the" spindl and the frame, H In te timony whereof I have afiixed my D resets BERLI'NnREtMi 

